Mortise lock cylinder with variable length side pin and curved slot pick

Abstract

The invention belongs to the technical field of spring locks, and relates to an insert core lock head capable of being unblocked by variable-length side elastic pieces and curved grooves. The insert core lock head comprises an inner lock body and an outer lock body, wherein unlocking shifting pieces are sequentially arranged between the inner lock body and the outer lock body; a lock body connecting block is fixedly connected with the inner lock body and the outer lock body; a lock core is arranged in axial lock holes of the inner lock body and the outer lock body; a connecting piece is arranged between the lock core and the unlocking shifting pieces; a row of outer elastic pieces which can move in the radial direction and springs are arranged in each of two grooves which are respectively and axially formed in the inner walls of the lock holes of the inner lock body and the outer lock body; a key hole is axially formed in the middle part of the lock core; a row of bolts which are driven to contract inwards by a key are arranged in a bolt groove which is horizontally formed in the lock core arranged at the lower side of the key hole; the springs are arranged between the bolts and the bolt groove; the bolts are tightly arranged on the inner walls of a lock hole of a lock body in an outward leaning way or are tightly arranged in a clamping groove in the inner wall of the lock hole through the springs; inner elastic pieces are arranged in an elastic piece hole of the lock core. The insert core lock head disclosed by the invention has the advantages that the length of the lock body is adjustable, the unlocking difficulty is large, and the insert core lock head is suitable for a mechanical type anti-theft door lock.

Description

technical field [0001] The invention belongs to the technical field of pin locks, in particular to a mortise lock head with variable-length side pins and curved groove unlocking. Background technique [0002] CN 101649691A discloses "An Anti-Chambering Double-row Bead Insert Core Lock Head", which includes a lock body, a lock core, a marble arranged in the lock cylinder, a flat bead arranged in the lock body opposite to the pin, and the flat bead offset The living spring, the sealing bead against the other end of the spring, and the dial set under the bridge of the lock body, the two rows of bead holes are precisely processed downward on both sides symmetrically centered on the bridge of the lock body directly above the lock body, and the two rows The bead holes are adjacent to each other and staggered from each other, and each row of bead holes includes 6. The double-row bead mortise lock head of this structure can be unlocked or locked with a key from both inside and outsi...

AI Technical Summary

Problems solved by technology

[0002] CN 101649691A discloses "An Anti-Chambering Double-row Bead Mortise Lock Head", which includes a lock body, a lock core, a marble arranged in the lock cylinder, a flat bead arranged in the lock body opposite to the pin, and a flat bead offset against the pin The living spring, the sealing bead against the other end of the spring, and the dial set under the bridge of the lock body, are precision-machined double rows of bead holes downward on both sides symmetrically centered on the bridge of the lock body directly above the lock body. The bead holes are adjacent to each other and staggered from each other, and each row of bead holes includes 6. The double-row bead mortise lock head of this structure can be unlocked or locked with a key from both inside and outside the door; its disadvantages are: first, its lock body The length of the lock is fixed and cannot be used for installation on doors of different thicknesses; the second is that although double rows of beads are arranged in the same direction, its anti-theft unlocking performance is still very poor; the third is that it is in the thickest direction of the lock body. There are rows of through holes through the keyhole. The height of the pins and springs is limited, and more metal lead or other similar substances must be used to block the outer ends of the through holes. The structure is complex and the production cost is high.

Images